package org.example;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Response {
    private static final int BUFFER_SIZE=1024;
    Request request;
    OutputStream output;
    public Response(OutputStream outputStream){
        this.output = outputStream;
    }

    public void setRequest(Request request){
        this.request = request;
    }

    public void sendStaticResources() throws IOException {
        byte[] bytes = new byte[BUFFER_SIZE];
        FileInputStream fis = null;
        try{
            File file = new File(HttpServer.WEB_ROOT,request.getUri());
            if(file.exists()){
                fis = new FileInputStream(file);
                output.write("HTTP/1.1 200 OK\r\n\r\n".getBytes());
                int ch = fis.read(bytes,0,BUFFER_SIZE);
                while(ch!=-1){
                    output.write(bytes,0,ch);
                    ch=fis.read(bytes,0,BUFFER_SIZE);
                }
            }else{
                //file not found
                String errorMessage = "HTTP/1.1 404 File Not Found\r\n"+
                        "Content-Type:text/html\r\n"+
                        "Content-Length:23\r\n" +
                        "\r\n" +
                        "<h1>File Not Found</h1>";
                output.write(errorMessage.getBytes());
            }
        }catch (Exception ex){
            //throw if cannot instantiate a File object
            System.out.println(ex.toString());
        }
        finally {
            if(fis != null) {
                fis.close();
            }
        }
    }
}
